To be honest Perkins being able to guard Dwight is one of the biggest myths in the NBA. He got that rep for one playoff series I believe but Dwight doesn't have his way with him any less than he does everybody else. He still has shot 56-60% whenever perk guarded him over the years and Nash is only going to make Dwight's life even easier.

The reason Perk is considered a good defender for Dwight is because you don't have to help. Dwight's going to get his numbers, but if you have Kendrick Perkins then you'll live with one on one coverage. There's a reason Boston gave Orlando so many fits over the years.